Starwood is offering 25,000 United miles for stays of at least five nights (at a single property) in Hawaii.
The following hotels are included:
The Royal Hawaiian, A Luxury Collection Resort
Moana Surfrider, A Westin Resort & Spa
Sheraton Princess Kaiulani
Sheraton Maui Resort & Spa
The Westin Maui Resort & Spa
The Westin Ka’anapali Ocean Resort Villas
Sheraton Kauai Resort
The Westin Princeville Ocean Resort Villas
The St. Regis Princeville Resort
Sheraton Keauhou Bay Resort & Spa
To take advantage of this offer, you must book your stay by September 30 and complete your stay by December 23. Book online or call 866-716-8140 using promo code UA25K. You must credit your stays to your Mileage Plus account in order to receive the bonus miles. Fine print here.